Nokia — battery draining

Nokia 6300 the worst handset, within 6 months of purchase battery started draining, submitted it to service centre on 13th sep and after several followups got it back 2 days before took a long time still the same problem is there, will my problem be resolved, i reside in faridabad n go to guragaon everyday so cant waste my time by visiting service centre again and again.
pls resolve my problem